There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
Beleaguered Gupta family, one of South Africa's wealthiest and most influential with ties to President Jacob Zuma, has announced to relinquish all their business interests in the country by the end of this year. Gupta Family To Sell South African Interests. Press Trust of India | Sunday August 28, 2016